We have introduced a single-shot pulsed gradient stimulated echo sequence to address the challenges of diffusion measurements of laser polarized 3 He and 129xe gas. Laser polarization enhances the NMR sensitivity of these noble gases by >10', but creates an unstable, non-thermal polarization that is not readily renewable. We have devised a new method that permits parallel acquisition of the several measurements required to determine a diffusive attenuation curve. In principle, the complete NMR characterization of a sample's diffusion behavior may be accomplished in a single measurement, using only a single polarization step. As a demonstration, we have measured the diffusion coefficient of a sample of laser polarized 129xe gas via this method.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR000995-26
Application #
6449613
Study Section
Project Start
2001-05-01
Project End
2002-04-30
Budget Start
Budget End
Support Year
26
Fiscal Year
2001
Total Cost
Indirect Cost
Name
Massachusetts Institute of Technology
Department
Type
DUNS #
City
Cambridge
State
MA
Country
United States
Zip Code
02139
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